How can I use the inpolygon function for 3 dimensions?
19 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Candice Cooper
le 28 Juin 2021
Modifié(e) : Walter Roberson
le 28 Juin 2021
I have plotted the chlorophyll monthly climatology of a specific region of a world map. I want to place a polygon on a specific region and plot time series for just that region. The chlorophyll data is in 3 dimensions of longitude, latitude, and dates (109x97x280). I'm confused on how to use the inpolygon function for 3 dimensions. I want to be able to make the polygon, determine which points are within that polygon, then average those points for each date to ultimately plot a time series. Any suggestions are helpful, thank you!
2 commentaires
Réponse acceptée
KSSV
le 28 Juin 2021
You need not to use a 3D inpolygon. You are supposed to use inpolygon only once. Get your closed polygon coordinates(xv,yv); let X, Y be your grid coordinates.
idx = inpolygon(X,Y,xv,yv) ;
You got the indices, the same indices can be used for all the time steps.
5 commentaires
Walter Roberson
le 28 Juin 2021
Modifié(e) : Walter Roberson
le 28 Juin 2021
Your xv and yv are 2d but do not have the same number of columns.
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Map Display dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!